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Fe-doped epitaxial YBCO films prepared by chemical solution deposition

期刊名称：J.Mod.Transport
时间：2014.2.9
页码：45-49
分类：TM26[电气工程—电工理论与新技术;一般工业技术—材料科学与工程] O734[理学—晶体学]
作者机构：[1]Superconductivity and New Energy R&, [2]D Center, Southwest Jiaotong University, Chengdu 610031, China
相关基金：This research was supported by the Specialized Research Fund for the Doctoral Program of Higher Education，Natural Science Foundation of China under Contract Nos.50672078 and 50872116, the National Science Fund for Distinguished Young Scholars under Contract No.50588201, and 51102199, the National High-Tech Program of China （863 Program） under Contract No.2007AA03Z203, the PCSIRT of the Ministry of Educa，Research and Development Foundation of Southwest Jiao tong University under Grant Contract No.2004A02, Fundamental Research Funds for the Central Universities，the National Natural Science Foundation，Fundamental Research Funds for the Central Universities of China
相关项目：狭缝涂覆技术结合高分子辅助化学溶液沉积法动态制备涂层导体带材工艺中关键问题研究

作者： Yong Zhao|Wentao Wang|Min Pan|Ming Lei|

关键词： YBCO薄膜, 铁掺杂, 化学溶液沉积, YBCO涂层导体, 制备, Fe, 磁悬浮列车, 承载能力, Epitaxial films , Fe doping , Superconductor , Coated conductor

中文摘要：

涂的导体有的 YBa2Cu3O7-(YBCO ) 在象超导的磁悬浮火车火车和超导的电的电报那样的大规模应用的广阔潜力，而是低当前的带能力在高温度和高磁场制止 YBCO 涂的导体的实际申请。与高批评的当前的密度开发 YBCO 涂的售票员是关键的。在这份报纸，取向附生、稠密、光滑、没有裂缝的做 Fe 的 YBCO 电影经由没有氟的符号的帮助聚合物的金属在 LaAlO3 单个水晶底层上被准备器官的免职方法。在微观结构和 YBCO 电影的超导的特性上做的 dilute Fe 的效果被调查。批评温度为做 Fe 的 YBCO 电影超导稍微减少。然而， YBCO 的批评当前的密度拍摄的内场改善与冲淡数量做不到 x = 的 Fe 0.005，与纯 YBCO 电影相比。因此， YBCO 电影的当前的带能力能由与 Fe 的适当数量做改善。冲淡的这个工具在 YBCO 电影做的 Fe 可以是准备高效的涂的导体的一个可行方法。

英文摘要：

YBa2Cu3O7-d （YBCO）-coated conductors havewide-ranging potential in large-scale applications such assuperconducting maglev trains and superconducting electriccables, but low current carrying capability restrains thepractical application of YBCO-coated conductors at hightemperatures and high magnetic fields. It is crucial todevelop YBCO-coated conductors with high critical currentdensity. In this paper, epitaxial, dense, smooth, andcrack-free Fe-doped YBCO films were prepared on aLaAlO3 single crystal substrate via a fluorine-free polymerassistedmetal organic deposition method. The effects ofthe dilute Fe doping on microstructure and superconductingcharacter of YBCO films were investigated. The criticaltemperature for superconducting of the Fe-dopedYBCO films decreases slightly. However, the in-fieldcritical current density of YBCO films improves with diluteFe doping of amounts less than x = 0.005, compared to thepure YBCO film. Therefore, the current carrying capabilityof YBCO film can improve by doping with appropriateamounts of Fe. This means that dilute Fe doping in YBCOfilms may be a feasible way to prepare high-performancecoated conductors.

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